| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | WEBBED, SOLID |
| BORE NOMINAL DIAMETER | 4.750 INCHES BOTH ENDS |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| FACE NOMINAL WIDTH | 3.750 INCHES |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM TEETH |
| HELIX ANGLE | 15.0000 DEGREES |
| HUB NOMINAL DIAMETER | 6.437 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8645 OVERALL |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.750 INCHES AXIALLY THROUGH BODY, FIRST END |
| NOMINAL OUTSIDE DIAMETER | 15.482 INCHES |
| SPECIAL FEATURES | 3B THREADS |
| PITCH DIAMETER | 15.0000 INCHES NOMINAL |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SPLINE PITCH DIAMETER | 4.5000 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 18 BOTH ENDS |
| STYLE DESIGNATOR | FLUSH HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-16232,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| TEETH QUANTITY | 60 |
| TEETH TYPE | SINGLE HELIX |
| TOOTH FORM | STANDARD |
| TOOTH DIRECTION | RIGHT |